生态健全,环境优美,国土绿化发达已成为现代国际大都市的重要标志之一。因而,把公路绿化提高到一个新水平是21世纪实现我国生态环境建设跨越式发展的重要组成部分。1生态环境对绿化的高标准要求 生态环境强调提高环境质量,保护自然资源的再生和扩大。即大力发展自然保护区,扩大陆生和水生植物资源,提高自然和人工生物群落的繁殖能力,改善大气质量,恢复和改善自然地貌。通过人工培育和引进增加物种多样化。在植物 Ecological sound, beautiful environment, green land development has become an important symbol of modern international metropolis. Therefore, raising the highway greening to a new level is an important part of realizing the leapfrog development of our country’s ecological environment construction in the 21st century. 1 Ecological Environment The high standard of greening requires that the ecological environment emphasize improving the quality of the environment and protecting the regeneration and expansion of natural resources. That is, we will vigorously develop nature reserves, expand terrestrial and aquatic plant resources, raise the reproductive capacity of natural and artificial biomes, improve the air quality, and restore and improve the natural landscape. Increase species diversity through artificial cultivation and introduction. In the plant